Window opening and closing device



FIG. 1 is a view of the window opening and closing device from the top;

FIG. 2 is a view of the window opening and closing device from thebottom; and,

FIG. 3 is a view of the device from the side with the right, left, frontand back views being substantially the same.

The ornamental design for a window opening and closing device, as shownand described.